Java

Tell us about your experience using the StringBuilder class for working with strings in your projects.

create table PASS_EXPIRATION_NOTIFY_ENTITY ( ID CHARACTER VARYING(36) not null, USER_ID CHARACTER VARYING(255), REALM_ID CHARACTER VARYING(255), EXPIRATION_DATE TIMESTAMP, NOTIFY_SCHEDULED_DATE TIMESTAMP, constraint PASS_EXPIRATION_NOTIFY_ENTITY_PK primary key (ID) ); select * from PASS_EXPIRATION_NOTIFY_ENTITY where NOTIFY_SCHEDULED_DATE > now()

Senior

СБЕР

Can you give an example of a task where you independently solved multithreading problems?

What is a feature lead, and what was your experience in this role?

Senior

Т-Банк

What are the message delivery strategies in Kafka and how are they implemented?

Senior

СБЕР

What is the main problem of this implementation Lack of Consumer Group separation Configured wait time in polling Integration with the Diptychi system Incorrect message storage policy Lack of message filtering settings in the listener factory configuration No separate batches

How does the mediator pattern differ from proxy?

Senior

Альфа-Банк

Откуда приходит событие в Kafka? Кто говорит, что нужно сделать начисление?

Delivery guarantees in Kafka (at-most-once, at-least-once, exactly-once) and message order

Tell us about yourself and your work experience (not repeating your resume): interesting tasks, business context, what you did personally.

What collection do you use for the top 10 most expensive products in real-time with support for a sorted list?

Senior

IT One

In what order should catch blocks be arranged (for example, FileNotFoundException and IOException)?

Senior

IT One

Write the simplest method that would throw a StackOverflowError during execution.

Algorithmic problem: given an integer array, move all zeros to the end, preserving the order of other elements (e.g., [1,0,3,0,1] → [1,3,1,0,0])

Senior

СБЕР

What happens when you make an HTTP request from a browser before receiving a response?

In what cases will the finally section not execute?

Senior

IT One

Architectural task: a deferred notifications system for bonuses (tens of millions of users)

What scopes are available in Spring? What is singleton scope?

Senior

СБЕР

How to ensure that a Scheduled Job runs only on one instance out of 20 in a cluster?

Middle+

Иннотех

What is inversion of control (IoC), how is this principle implemented, and what is it used for?